A plugin that connects an agent to Summer Engine through an MCP server, a standard bridge for tools, and provides project context and game-development skills. It can also optionally block Git commits when a project check needs attention.

Use it for Summer Engine projects, including game-development tasks, MCP tool access and pre-commit project checks.

It gives the agent the connection and project guidance needed to work with Summer Engine. The optional commit check helps catch issues before changes are committed.

summer — Plugin for Gemini CLI by SummerEngine

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/SummerEngine/summer-engine-agent

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/summerengine/summer-engine-agent/gemini-extension/github.svg)](https://agentmods.dev/plugins/summerengine/summer-engine-agent/gemini-extension)

Your own site

<a href="https://agentmods.dev/plugins/summerengine/summer-engine-agent/gemini-extension"><img src="https://agentmods.dev/badge/plugins/summerengine/summer-engine-agent/gemini-extension/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/summerengine/summer-engine-agent/gemini-extension"><img src="https://agentmods.dev/badge/plugins/summerengine/summer-engine-agent/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

summer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

gemini-extension.json · 22 lines

What it actually says

{
  "name": "summer",
  "version": "2.5.1",
  "description": "Agent tooling for Summer Engine: MCP bridge, context primer, and game-dev skills. Use with the npm CLI for skill files on disk.",
  "contextFileName": "GEMINI.md",
  "mcpServers": {
    "summer-engine": {
      "command": "npx",
      "args": ["summer-engine", "mcp"],
      "cwd": "${extensionPath}"
    }
  },
  "settings": [
    {
      "name": "enable_pre_commit_doctor",
      "description": "Block git commits when summer doctor needs attention (off by default)",
      "envVar": "SUMMER_PRE_COMMIT_DOCTOR",
      "sensitive": false
    }
  ]
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 22 lines scan A fad426ef3431

Subscribe to this mod's changes

summer is a plugin published in the GitHub repository SummerEngine/summer-engine-agent (59 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-08.

Commits Game development Git and workflow ai ai-game-development ai-game-engine game-development game-engine

summer

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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